This is a National Phase Application filed under 35 U.S.C. 371 as a national stage of PCT/CN2018/092186, filed Jun. 21, 2018, an application claiming the benefit of Chinese Application No. 201710821158.9, filed Sep. 13, 2017, the disclosure of which is incorporated herein by reference.
The present disclosure relates to the field of display technologies, and in particular, to a substrate conveyance device.
However, the substrate 10 being conveyed may come into contact with the conveying mechanism 1 or the guide roller 2 to generate friction. The friction of the substrate 10 with the conveying mechanism 1 or the guide roller 2 may generate particles. In the case of a large-sized display panel, since the large-sized display panel has a large self-weight, a weight of carrying platform becomes larger. In this regard, the frictional force generated by the substrate 10 in relation to the conveying mechanism 1 or the guide roller 2 is also relatively large, thereby generating more particles. These particles are more likely to fall into a region of the substrate 10 close to the guide roller 2 (as indicated by dotted lines in
In order to address above problems, the disclosure provides a substrate conveyance device, comprising: a carrying platform, configured to support a substrate; a conveying mechanism, disposed below the carrying platform and configured to convey the carrying platform; and oppositely disposed guiding mechanisms, disposed on both sides of the carrying platform in a conveying direction, respectively, wherein first magnetic field generators are disposed on both sides of the carrying platform in the conveying direction, and the guiding mechanism includes second magnetic field generators adjacent to the first magnetic field generators and disposed oppositely to the first magnetic field generators, respectively, such that the first magnetic field generator and the second magnetic field generator which are adjacent to each other have the same polarity.
Preferably, the guide mechanisms form a guide chamber surrounding the carrying platform, and second magnetic field generators are disposed on inner side walls of the guide chamber.
Preferably, the first magnetic field generator and the second magnetic field generator are located on the same horizontal plane.
Preferably, each of the first magnetic field generator and the second magnetic field generator includes a plurality of magnets spaced apart along the conveying direction.
Preferably, the conveying mechanism comprises: a rotatable conveying roller having an axial direction perpendicular to the conveying direction; a first motor, configured to drive the conveying roller to rotate; and a connecting rod, configured to connect the conveying roller and the first motor.
Preferably, the conveying roller is in direct contact with the carrying platform and supports the carrying platform, and the first motor and the connecting rod are not in contact with the carrying platform; the guide chamber having an inverted U-shaped cross section is mounted on the connecting rod; and the first motor transmits power to the conveying roller through the connecting rod.
Preferably, third magnetic field generators are provided on bottom edges of the carrying platform, and fourth magnetic field generators adjacent to the third magnetic field generators and disposed opposite to the third magnetic field generators are provided on the connecting rods, such that the third magnetic field generator and the fourth magnetic field generator which are adjacent to each other have the same polarity.
Preferably, the guiding chamber having the inverted U-shaped cross section is mounted on the connecting rods, and the fourth magnetic field generator is closer to the conveying roller in relation to the side wall of the guiding chamber.
Preferably, the third magnetic field generator is embedded inside the bottom of the carrying platform, and the conveying roller includes a magnetic rolling shaft serving as the fourth magnetic field generator and a protective sleeve around a surface of the rolling shaft.
Preferably, the protective sleeve is made of rubber; and the protective sleeve has a cylindrical shape concentric with the rolling shaft.
Preferably, a pitch of the magnets of the first magnetic field generator is smaller than that of the magnets of the second magnetic field generator.
In the drawings, reference numerals are: 10, a substrate; 1, a conveying mechanism; 11, a conveying roller; 12, a first motor; 13, a connecting rod; 14, a fourth magnetic field generator; 15, a rolling shaft; 16, a protective sleeve; 2, a guiding roller; 3, a carrying platform; 31, a first magnetic field generator; 33, a third magnetic field generator; 4, a guiding mechanism; 41, a guiding chamber; and 42, a second magnetic field generator.
In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
Herein, the term “same polarity” means that the first magnetic field generator 31 and the second magnetic field generator 42 are N poles or S poles. In the exemplary embodiment shown in
According to this embodiment, the first magnetic field generators 31 are disposed on both sides of the carrying platform 3 in the conveying direction, and the guiding mechanism 4 includes the second magnetic field generators 42 adjacent to the first magnetic field generators 31 and opposite to the first magnetic field generators 31, respectively, such that the first magnetic field generator 31 and the second magnetic field generator 42 which are adjacent to each other have the same polarity. Since a mutually exclusive force can be generated between the first magnetic field generator 31 and the second magnetic field generator 42 which are adjacent to each other and have the same polarity, the carrying platform 3 can be restricted from approaching the guiding mechanism 4. In this way, it is possible to avoid the generation of particles due to the contact of the carrying platform 3 with the guiding mechanism 4. Therefore, the substrate on the carrying platform 3 cannot be contaminated.
In this embodiment, as shown in
As an optional implementation in the embodiment, the first magnetic field generator 31 and the second magnetic field generator 42 are located on the same horizontal plane.
According to the embodiment of the present disclosure, the carrying platform 3 and the substrate on the carrying platform 3 are carried by the conveying mechanism 1 underneath the carrying platform 3. It should be noted that the magnetic force (i.e., the repulsive force) generated between the first magnetic field generator 31 and the second magnetic field generator 42 is designed to ensure that the carrying platform 3 can not deviate from the conveying direction of the conveying mechanism 1. In general, the magnetic force (i.e., the repulsive force) can be calculated according to sizes of the carrying platform 3 and the substrate, or can be set empirically.
As an optional implementation in the embodiment, a successive long magnet may be disposed on an inner side wall of the guiding chamber 41 as the second magnetic field generator 42. In this way, a continuous magnetic force (i.e., repulsive force) can be generated between the first magnetic field generator 31 and the second magnetic field generator 42 to ensure smooth conveying of the substrate. It can be understood that, as shown in
As an optional implementation in the embodiment, as shown in
Further, as shown in
Preferably, the guiding chamber 41 having the inverted U-shaped cross section is mounted on the connecting rods 13, and the fourth magnetic field generators 14 are closer to the conveying rollers 11 in relation to the side walls of the guiding chamber.
In this embodiment, as shown in
In an exemplary embodiment, the guiding chamber 41 may be a vacuum chamber in a substrate evaporation-deposition process. In this case, the second magnetic field generator 42 is located on an inner wall of the vacuum evaporation-deposition chamber. When the guiding chamber 41 is applied to the evaporation-deposition process, the connecting rod 13 is also located in the evaporation-deposition chamber. Further, an evaporation-deposition device, a vapor source and a vapor material (not shown in
In this embodiment, as shown in
As a preferred implementation in the embodiment, the protective sleeve 16 is made of rubber; and the protective sleeve 16 has a cylindrical shape concentric with the rolling shaft 15.
It should be noted that the size, thickness, and the like of each structure shown in the drawings are schematic. In a specific practice, the size and proportion of the structure can be changed according to actual needs.
There is provided a display device in an embodiment of the present disclosure, which employs the above substrate conveyance device in the preparation process. Examples of the display device may include a liquid crystal display panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and any product or component having a display function.
It is to be understood that the above embodiments are merely exemplary embodiments employed to explain the principles of the present disclosure, but the present disclosure is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the disclosure, and such modifications and improvements are also considered to be within the scope of the disclosure.
Number | Date | Country | Kind |
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201710821158.9 | Sep 2017 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2018/092186 | 6/21/2018 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2019/052248 | 3/21/2019 | WO | A |
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First Office Action dated Sep. 30, 2019, for corresponding CN 201710821158.9 with English translation. |
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Number | Date | Country | |
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20210229921 A1 | Jul 2021 | US |